Author

Akbar Rafiey

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#artificial intelligence Preprint Sep 2026

Self-Supervised Combinatorial Optimization with Constraints via Frank-Wolfe

Self-supervised learning for combinatorial optimization has emerged as a promising paradigm for solving discrete optimization problems with neural networks, but a central challenge remains: handling hard combinatorial constraints within continuous, gradient-based training. Continuously extending combinatorial objective...

Akbar Rafiey, Yi-Fei Xu, Nikolaos Karalias · 0 citations

Preprint Aug 2026

StepJack: Benchmarking Computer-Use Agent Safety Against Multi-Step Indirect Prompt Injection

This paper introduces multi-step indirect prompt injection, a new attack class against CUAs in which the adversarial goal is decomposed into multiple innocuous-looking sub-steps and distributed across a chain of pages referenced along the agent's navigation path.

Zhuoxin Zhan, Akbar Rafiey, A. Ma et al. · 1 citation